Cheapest priced copy (Foundations): $0.49 at Card Kingdom, near mint, their price list as of .
Redcap Gutter-Dweller 
Creature — Goblin Warrior · 3/3 · Rare · Foundations · #631
Menace
When this creature enters, create two 1/1 black Rat creature tokens with "This token can't block."
At the beginning of your upkeep, you may sacrifice another creature. If you do, put a +1/+1 counter on this creature and exile the top card of your library. You may play that card this turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
6 printings · $0.49 to $2.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations | 631 | Rare | $0.49 | — |
| The List | WOE-146 | Rare | $0.49 | — |
| Wilds of Eldraine Promos | 146p | Rare | $0.49 | $1.99Out of stock |
| Wilds of Eldraine Promos | 146s | Rare | — | $2.29Out of stock |
| Wilds of Eldraine | 146 | Rare | $0.49 | $0.49 |
| Wilds of Eldraine | 351 | Rare | $0.79 | $0.79 |
2 rulings from Wizards of the Coast
- 8 November 2024If Redcap Gutter-Dweller leaves the battlefield after its last ability has triggered, you can still sacrifice a creature and exile the top card of your library, even though you won't put a +1/+1 counter on Redcap Gutter-Dweller.
- 8 November 2024You pay all costs and follow all normal timing rules for cards played with the permission granted by Redcap Gutter-Dweller's last ability. For example, if the exiled card is a land card, you may play it only during your main phase while the stack is empty.